Clamping device.



Patented May |4, Ism. G. N. PALsEn a T. & F. H. MccALL.

GLAMPING DEVICE.

(Application led pee. 11. 1900.)

(No Model.)

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UNITED STATES PATENT OEEICE.

GEORGE NEAL PALSER, TIBERIUS MCCALL, AND FRED H. MCOALL, OF NORTH LOUP,NEBRASKA.

CLAMPING DEVICE.

SPECIFICATION forming* part Of Letters Patent N0. 674,215, dated May 14,1901.

Application led December 11, 1900. Serial No. 39,575. (No model.)

To all whom it may concern,.-

Beit known that we,GEoRGE NEAL PALSEE, TIBERIUs MOCALL, andv FRED H.MoOnLL, citizens of the United States, residing at North Loup, in thecounty of Valley and State of Nebraska, have invented certain new anduseful Improvements in Clamping Devices; and We do declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same, reference being had to the accompanying drawings, and tothe letters of reference marked thereon, Which form a part of thisspecification.

This invention relates to an improved clamp of that general classemployed in connection with Artesian or other wells for temporarilysuspending a section of pipe at a desired height therein while anothersection is being attached thereto or detached therefrom, or for otherpurposes.

The primary object of the invention is to provide vm eans whereby asection of pipe may be clamped in elevated position and also preventedfrom turning or rotary movement.

With such object in view the invention con-` templates the employment ofa primary clamping means adapted to engage a section ofpipelongitudinally thereof and a secondary clamping means adapted toengage a section' of pipe at substantially the same plane as the primaryclamping means, but circumferentially thereof.

The invention also relates to improved details and combinations of theseveral parts, which will herein more fully appear.

In the accompanying drawingsan embodiment of the invention is delineatedfor the purpose of illustration, and in hereinafter referring to thesame like reference characters will refer to corresponding parts in bothviews.

In the drawings, Figure l is a side elevational view of theconstruction, a section of pipe beingshown by dotted lines; and Fig. 2isa plan view thereof.

Referring more speciiically to the drawings, A represents a strongbase-plate adapted to rest upon the ground or other suitable support,andB a centrally-arranged opening therein through which the pipe i'sadapted to pass.

Laterally of said opening is a guide-opening O to facilitate the placingof the base-plate in proper position around the pipe. Adapted to clampthe pipe longitudinally thereof is a cam D, serrated or otherwiseroughened upon its outer surface, which is pivoted at d and normallyheld in forward or operative position by the weighted lever Efto oneside.

of the plate A. Arranged opposite the biting or clamping edges of thecam aforesaid is a slide-block F,working in the guidewayf and providedwith an elongated shank f",- adapted to be adjusted longitudinally ofthe opening f2 in the base through the medium of an adjusting-screwfg.By reason of this block F being Worked back and forth it will beapparent that the size of the opening B through the base may be variedto accommodate various sizes of pipe desired to be operated upon. Tolimit the forward' movement of the cam, a lug or projection d is formedat its lower end, the lug being designed to contact with a shoulder d2on the base.

The portion of the device thus far described will serve to suspend apipe at the desired height in a well, but will not always be effectivein preventing a rotary or turning movement thereof when a section isbeing screwed to or from the same or otherwise attached in a 1n an nerto require a rotary or turning movement, and to accomplish thisdesideratum the following mechanism is provided: Working in theguideways G on the surface of the baseplate A,near the respective edgesthereof, are jaw-carrying members G' G2, the former carrying at its enda rigid inclined toothed jaw g and the latter a corresponding toothedjaw g', pivoted at g2. The one jaw is pivoted so as to be capable ofbeing swung outwardly (dotted lines, Fig. 2) until the pipe is insertedin the opening B in the base-plate. When the pipe has been inserted, thepivoted jaw is closed, and a projection g3 at the end thereof is engagedby a link or other fastening means g4 onthe jaw g to prevent theseparation of the jaws. A cross-bar h connects the rear ends of thejaw-carrying mem-bers, and

to the cross-bar a U -shaped leverH is secured at one end and at theopposite end is pivotally connected to a swinging upright H', the upperend of` which is in turn connected through IOO the medium of pivotedlinks H with the pivoted operating-lever I. It will thus be seen that asthe operating-lever I is pulled backward the pivoted links willcorrespondingly operate the upright, and by reason of the U- shapedlever the jaws will be caused to bind the pipe circnmferentially andprevent the same from turning. A forward movement of the lever willmanipulate the several parts in a man neropposite that just described.Some means must he provided for locking the jaws against movement whenin clamping position, so we provide at the upper end of the swinginguprighta projection or tooth Z,\vhich is adapted to be engaged by theteeth of the gravity-catch L, pivoted at Z' to the base-plate andnormallyinclined forwardly and held in operative position by its ownweight.

Many changes or alterations of the several parts and arrangement ofparts in the construction just described may be readily made Withoutdeparting from the spirit of the invention.

Having thus described the invention, what is claimed as new, and desiredto be secured by Letters Patent, is-

1. A clamping device comprisinga base provided with a through-opening,gripping means slidable on the base and means for actuating the grippingmeans comprising a main pivoted operating-lever, a pivoted upright,connections between the lever and upright and connections between theupright and the gripping means, substantially as described.

2. A clamp com prising a base provided with a through-opening, agrippingmeans, an opposing gripping means sldable back and forth on saidbase, and means for actuating said opposing gripping means comprising amain pivoted operating-lever, a swinging upright, connections betweenthe upright and lever, connections between the upright and the grippingmeans, a lug or projection on the swinging upright, and a catch adaptedto engage the lug or projection to lock the parts in adjusted position,substantially as described.

In testimony whereof we aiix our signatures in presence of twowitnesses.

GEORGE NEAL PALSER. TIBERIUS MCCALL. FRED H, MGOALL. Witnesses:

JOSEPH H. CLARK, HANNIBAL B. SAMPLE.

